1    /* 
2     * This interpreter is intended to paint different colored dots in a window 
3     * 
4     *  The commands that the interpreter can recognize and respond to are: 
5     *  - BLUE: paint a blue dot 
6     *  - RED: paint a red dot 
7     *  - GREEN: paint a green dot 
8     *  - YELLOW: paint a yellow dot 
9     *  - HELP: show a list of the commands in a dialog message box 
10    *  - EXIT: terminate the program 
11    */
12   package interpreters;
13   
14   import java.awt.Color;
15   import javax.swing.JOptionPane;
16   import javax.swing.SwingUtilities;
17   import painter.SPainter;
18   import shapes.SCircle;
19   
20   public class Interpreter2 {
21   
22       private void interpreter() {
23   
24           //CREATE OBJECTS TO THINK WITH
25           SPainter miro = new SPainter("Dot Thing" ,400,400);
26           miro.setScreenLocation(0,0);
27           SCircle dot = new SCircle(180);
28   
29           //REPEATEDLY TAKE A COMMAND FRAM AN INPUT DIALOG BOX AND INTERPRET IT
30           while ( true ) {
31               String command = JOptionPane.showInputDialog(null,"Command");
32               if ( command == null ) { command = "exit"; } // user clicked on Cancel
33               if ( command.equalsIgnoreCase("blue") ) {
34                   miro.setColor(Color.BLUE);
35                   miro.paint(dot);
36               } else if ( command.equalsIgnoreCase("red") ) {
37                   miro.setColor(Color.RED);
38                   miro.paint(dot);
39               } else if ( command.equalsIgnoreCase("green") ) {
40                   miro.setColor(Color.GREEN);
41                   miro.paint(dot);
42               } else if ( command.equalsIgnoreCase("yellow") ) {
43                   miro.setColor(Color.YELLOW);
44                   miro.paint(dot);
45               } else if ( command.equalsIgnoreCase("help") ) {
46                   JOptionPane.showMessageDialog(null, "Valid commands are: " + "RED | BLUE | GREEN | YELLOW | HELP | EXIT ");
47               } else if ( command.equalsIgnoreCase("exit") ) {
48                   miro.end();
49                   System.out.println("Thank you for viewing the dots ...");
50                   break;
51               } else {
52                   JOptionPane.showMessageDialog(null, "Unrecognizable command: " + command.toUpperCase());
53               }
54           }
55       }
56   
57       //INFRASTRUCTURE FOR SOME SIMPLE PAINTING
58   
59       public Interpreter2() {
60           interpreter();
61       }
62   
63       public static void main(String[] args) {
64           SwingUtilities.invokeLater(new Runnable() {
65               public void run() {
66                   new Interpreter2();
67               }
68           });
69       }
70   
71   }
72